CTQM Theory Colloquium

Semi-Classical Physics at Large Quantum Numbers

When
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Lunch is provided at 12:00 pm before the talk.

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Abstract:  In recent years it has been shown that strongly coupled many body systems become analytically tractable in the regime of large quantum numbers, such as large spin or large charge. We will review these developments and present applications to the theory of critical exponents.

 

How strong can the electron-phonon interaction in metals be?

When
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Lunch will be provided at 12:00pm, so please come early to eat mingle and eat lunch before the talk begins.

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Abstract: I’ll show that there exists a fundamental upper limit on the electron-phonon coupling strength in metals. This, in turn, implies an upper bound on the superconducting Tc. I’ll compare these bounds with new and old experimental data and ague that our theory explains several previously poorly understood experiments, such as the observation of metastable high-temperature superconductivity in FeSe.